MESON Chess Problem Database

Problem Display
PID: 225989 (4n3/1n3Q2/8/4p1k1/6P1/6P1/3R4/1K2BB2 w - - 0 1)

Markovtsy, Vassyl Yuriovich

Sachova skladba, 2002

4n3/1n3Q2/8/4p1k1/6P1/6P1/3R4/1K2BB2

#2

7 + 4

5454 Near Snap 2020
15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sd6
      • 2.Qg7#
    • 1...Sf6
      • 2.Qg7#
    • 1...Sc7
      • 2.Qg7#
    • 1...Sg7
      • 2.Qxg7#
  • Tries
    • 1.Bd3?
      • threat
        • 2.Qg6#
      • 1...Kxg4
        • 2.Qf5#
      • 1...Kh6
        • 2.Qg6#
      • 1...e4!
    • 1.Rh2?
      • threat
        • 2.Qf5#
      • 1...Kxg4
        • 2.Qh5#
      • 1...Sed6
        • 2.Qg7#
      • 1...Sf6
        • 2.Qg7#
      • 1...Sg7
        • 2.Qxg7#
      • 1...Sbd6!
    • 1.Qg8+?
      • 1...Kh6
        • 2.Rh2#
      • 1...Sg7
        • 2.Qxg7#
      • 1...Kf6!
  • Keys
    • 1.Rf2!
      • threat
        • 2.Qh5#
      • 1...Kxg4
        • 2.Qg6#
      • 1...Kh6
        • 2.Bd2#
      • 1...Sf6
        • 2.Qg7#
      • 1...Sg7
        • 2.Qxg7#

This anticipates 146856(2012)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • S(d);N_GUARD::QAR2(G)
    • S(d);N_GUARD::QAR2(G),XS(d)
  • Tries
    • Try
      • B(C);
      • Threat
        • QAR1(G)
      • Vars
        • K(b);P-FLIGHT,XP(F)::QAB1(G)
        • K(b);S_FLIGHT::QAR1(G)
      • Refutation
        • P(a);
    • Try
      • R(D);
      • Threat
        • QAR1(G)
      • Vars
        • K(b);P-FLIGHT,XP(F)::QAB1(G)
        • S(d);N_GUARD::QAR2(G)
        • S(d);N_GUARD::QAR2(G),XS(d)
      • Refutation
        • S(c);
    • Try
      • Q(G);CHECK
      • Vars
        • K(b);S_FLIGHT::R(D)
        • S(d);N_GUARD,P_SPINS(d)::QAR2(G),XS(d)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • R(D);
    • Threat
      • QAR1(G)
    • Vars
      • K(b);P-FLIGHT,XP(F)::QAR2(G)
      • K(b);S_FLIGHT::B(B)
      • S(d);N_GUARD::QAR2(G)
      • S(d);N_GUARD::QAR2(G),XS(d)
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